Moisture-proof covered bag



April 11, 1933. T. M. AVERY MOISTUREPROOF COVERED BAG Filed June 6, 1932 w v n Mm/m A F Patented 11,3933

implication area Ems a, loan denial lilo. 615,715.

The present invention relates to improve ments in and. more ewecially to those made off liher and ptovided with s transparent moisture proof covering for the e pachaging of codes and other commodities and the thereoi from atmospheric or other deteriorating influences.

@ne oi? the primary objects of the invention is to provide a novel and improved bag oi this hind which can be made from sheet paper and moisture proof material formed into tubular shape and seamed longitudinally so that the seam edges of the moisture proof covering are -pasted or united directly to one another, thus producing an efiective moistnne proof seal at the seam.

Another ohject is to provide a bag of this kind wherein the seam edges of the paper bag and the seam edges of the covering are pasted together in a manner which avoids the presence oi paste on the front of the bag and erehy enables the bag front to present a neat appearsnce.,-

A further ohiect of the invention is to provide e beg of this kind wherein the longitudinal seas of the paper bag and of the transperent moisture proof covering are located so closely to the adjacent longitudinal edge of the see side of the bag as to enable such side oi the bag'to be printed throughout its full width and equally close to its longitudinal edges'and to enable the same p'ting plates used for printing ordinary bags to'be used for printing the improved covered bags.

To these and other ends, the invention consists in certain impsovernents and combinations and arrangements of parts all as will be hereinefier more fully described, the features of novelty being pointed out particularly in. the claims at the end of the specification.

In the accompanying drawing Fig. 1 is a perspective view of a bag embodymg the present invention, upper portions of the bag being broken away for clearness in illustration;

Fig. 2 is a bottom plan view of the bag shown in Fig. 1;

Sill

bag is extended across substantially) the Fig. 3 is abottorn plan view oi the partially closed bag bottom; and

Fig. l is a transverse section through the bag talren on the line 4-4 in Fig, l.

The present invention is applicable to bags of different types, it being shown in the present instance applied to a bag of the socalled automatic type. Theimproved bag as shown comprises a bag proper 1 composed of fiber paper of any ot the kinds commonly used in maki ordinary paper bags, a liner 2 composed b thin flexible material preferably'having' air and moisture proof properties, such as Glassine or other fiber paper treated to render it air and moisture proof, and an outer transparent and moisture proof covering 3 composed preferably of thin, flexible or foldable, trans arent sheet material such as cellophane or any of the other well-known thin, trans 1'- out, flexible sheet cellulose products obtained from viscose and having the propertiesof cellophane. The bag as shown has tucks or pleats in its sides so that it may collapse or expand, and the bottom of the bag is closed by bottom fia s i which are turned inwardly from the p eated sides of the bag and bottom flaps 5 which are turned inwardly from the front and rear of the bag and are pasted to the flaps t and to one another, the bag bottom as shown being of a common and well-known form. The longitudinal edges of the liner 2 are overlapped at one side of the bag and united in the usual way by a line of. paste 6 to provide a longitudinal scam. I

Accordin to the present invention, one of the longitu inal ed s 7 of the fiber paper bag is extended inwar ly from an adjacent longitudinal edge or-corner 8 thereof and the other longitudinal edge 9 of the fiberpagfi width of the respective side oi the ag to or nearly tothe corner or edge 8 and it overlaps the longitudinal edge 7 preferably to a somewhat greater extent than usual in the longitudinal seams of ordinary bags. One of the longitudinal edges 10 of thetransparent moisture proof covering extends inwardly from the edge or corner 8 a distance somewhat less than the width of the edge 7 of the ering is pasted directly to the other edge of the outer covering by a continuous line of paste l2 and the portion of the edge 9 of the paper bag which is exposed directly to the remainder of the width of the other lon 'tudinal edge 7 of the paper bag is asted rectly thereto by a contlnuous line 0 paste 13.

The direct pasting together of the longitudinal or seam edges 10 and 11 of the outer transparent moisture proof covering 3 throughout the length of the'bag provides an efiective air and moisture proof seal at the longitudinal seam of the covering, and the direct pasting together of the seam edge 9 of the fiber paper bag to the remainder of the width of the other seam edge 7 thereof which is not covered by the seam edges of the outer covering provides maximum strength for the seam to prevent opening thereof. The pasting together of the seam vedges 10 and 11 of the outer covering in the region between the seam edges 7 and 9 of the fiber paper bag confines the paste used in making these seams entirely within the seams so that the paste 1s not exposed on the exterior or outer sides of the bag and the bag consequently presents a neat appearance.

Furthermore, the formation of the lon tudinal seams of the fiber paper bag and t e outer covering in the manner described enablcs the seam side of the fiber paper bag to receive printed impressions which may occupy the full width of this side of-the bag and it enables the same printing plates employed for printing the faces of ordinary bags to be used for printing the seam sides of the improved bags, since the seam edge 9 of the fiber paper bag extends to or substantially to the edge or corner 8 of the bag so that substantially the full width of the seam side of the paper bag is exposed continuously or without interruption to receive the printed imprexions, it being possible to extend the printed impression as close to the edge or corner 8 of the bag as to the other edge or corner thereof. It will be understood of course that the printed impressions are made on the fiber paper bag 1 and that they will be exposed and clearly visible through the transparent covering 3.

The improved bag hereinbefore described may be made in different ways, but it is particularly suitable for rapid and economical manufacture on an ordinary bag making machine. In making the improved bags in that manner, the sheet of fiber paper from which acoaeee the bag proper 1 is made is rinted in the usual manner in ordinary 3g printin mechanism and after printing, e sheet 0 cellophane or other transparent moisture proof material to form the covering 3 is applied to the printed side of the fiber paper, it taking the place of the usual slip sheet, one edge of the transparent moisture proof material extendin beyond the respective edge of the prints paper sheet to an extent corres ending to that to which the edge 11 to turned under the edge 9, and the sheet to form the liner 2 is is to the opposite or unprinted face of the paper sheet, the lines of paste 6 and 13 being applied to the liner sheet and paper sheet as t ey advance. The three sheets are then formed into a bag tube as usual in an ordinary bag making machine, the pasted edges of the sheets being united to form the seams, and before uniting the seam edges 7 and 9 of the fiber paper strip, the edge 11 of the transparent covering sheet is turned under the ed e 9 of the paper sbeet'and adhesive is applie to the side of the seam edge 11 which is opposite to the seam edge 10 and these edges of the covering and the seam edges 7 and 9 of the paper sheet are then united. The com osite bag tube thus formed and seemed lon tudinally is cut into bag lengths and the ttom of the bag closed in the usual and welllrnown manner. The upper and lower ends of the fiber paper bag 1 and transparent covering 3 may be pasted together by any suitable adhesive such as white ink which may he applied during the making of the bag, and the liner 2 may be pasted to the inside of the fiber paper bag 1 in the usual manner.

I claim as my invention:

1. A bag having a longitudinal seam, and a moisture proof outer covering therefor also having a longitudinal seam, an edge of the seam of the covering being turned under an edge of the seam of the bag for a portion of the width of the bag seam and being directly united to the other edge of the seam of the covering, and the edges of the bag seam being directly united for another portion of the width of the bag seam.

2. A bag having a longitudinal seam, and a moisture proof outer covering therefor also having a longitudinal seam the portions of which are directly united to one another, an edge of the seam of the covering being turned under an edge of the seam of the bag for a portion of the width of the latter seam and directly united to the other edge of the seam of the covering.

3. A bag having a longitudinal seam immediately adiacent to and extending along a longitudinal side edge thereof, the side of the ban: having such seam being of substantially the full width of the bag, and a trans parent moisture proof outer covering having a longitudinal seam an edge of which is 111 band.

y TRUE My AVERY. 

